in reply to Re^2: unlinking an index.dat file in windows
in thread unlinking an index.dat file in windows

Use http://sysinternals.com/ ProcessExplorer or handle to find out which program has a handle to the file ... http://en.wikipedia.org/wiki/Index.dat, A Cleanup API for Windows, http://blogs.msdn.com/b/wndp/archive/2006/08/07/wininet-index-dat-q-and-a.aspx
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